<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>


<form>

    <input type="text" placeholder="用户名(最少6位,对多10位)" name="username">
    <input type="text" placeholder="密码" name="pwd">
    <input type="text" placeholder="确认密码" name="cpwd">
    <input type="button" value="注册" id="req_button">
</form>

<script src="jq"></script>
<script>
    var req = document.getElementById('req_button')
    req.onclick = function () {
        $.ajax()
    }
</script>

</body>
</html>


